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2002•IJP. International journal of pavementsRequires access

A LABORATORY ASSESSMENT OF BINDERS' CONTRIBUTION TO RUTTING SUSCEPTIBILITY

Rafiqul A. Tarefder, M Zamans, Kenneth R. Hobson

Open publisher page 4 citations

Abstract

The relationships between rheological and mechanical properties for various Oklahoma unmodified and modified binders based on the asphalt mixture's rutting performance were investigated in this study. The mixture rutting performance was determined in the Asphalt Pavement Analyzer (APA). The results indicate that binder's Performance Grade (PG) affects mixture performance significantly. The modified binder usually shows better performance when compared to the unmodified binders. Binder's viscosity and rut factor do not show significant effect on rutting performance of both modified and unmodified binders. Both linear and nonlinear regression analyses were performed to investigate the role of binder properties in contribution to rutting. The 8000-cycle rut depth has been related with 500-cycle rut depth and other rut parameters through regression equations.

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What this paper is about

The relationships between rheological and mechanical properties for various Oklahoma unmodified and modified binders based on the asphalt mixture's rutting performance were investigated in this study. The mixture rutting performance was determined in the Asphalt Pavement Analyzer (APA). The results indicate that binder's Performance Grade (PG) affects mixture performance significantly. The modified binder usually shows better performance when compared to the unmodified binders. Binder's viscosity and rut factor do not show significant effect on rutting performance of both modified and unmodified binders. Both linear and nonlinear regression analyses were performed to investigate the role of binder properties in contribution to rutting. The 8000-cycle rut depth has been related with 500-cycle rut depth and other rut parameters through regression equations.

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Available abstract

The relationships between rheological and mechanical properties for various Oklahoma unmodified and modified binders based on the asphalt mixture's rutting performance were investigated in this study. The mixture rutting performance was determined in the Asphalt Pavement Analyzer (APA). The results indicate that binder's Performance Grade (PG) affects mixture performance significantly. The modified binder usually shows better performance when compared to the unmodified binders. Binder's viscosity and rut factor do not show significant effect on rutting performance of both modified and unmodified binders. Both linear and nonlinear regression analyses were performed to investigate the role of binder properties in contribution to rutting. The 8000-cycle rut depth has been related with 500-cycle rut depth and other rut parameters through regression equations.

Key concepts: Rut, Asphalt, Rheology, Materials science, Composite material, Linear regression, Asphalt pavement, Viscosity

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